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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: SimpleObjectParser.html 822 2014-01-22 18:02:37Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.string;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.beans.BeanInfo;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.beans.IndexedPropertyDescriptor;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.beans.IntrospectionException;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.beans.Introspector;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.beans.PropertyDescriptor;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.lang.reflect.Method;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Collections;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import java.util.HashMap;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import java.util.Map;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.regex.Matcher;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.regex.Pattern;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.regex.PatternSyntaxException;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.dellroad.stuff.java.Primitive;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>/**<a name="line.25"></a>
<span class="sourceLineNo">026</span> * Parses strings using regular expressions into new instances of some class by parsing substrings.<a name="line.26"></a>
<span class="sourceLineNo">027</span> * Primitive and String values are handled automatically. Other property types can be handled by<a name="line.27"></a>
<span class="sourceLineNo">028</span> * overriding {@link #setProperty}.<a name="line.28"></a>
<span class="sourceLineNo">029</span> *<a name="line.29"></a>
<span class="sourceLineNo">030</span> * &lt;a name="namedgroup"/&gt;<a name="line.30"></a>
<span class="sourceLineNo">031</span> * &lt;p&gt;<a name="line.31"></a>
<span class="sourceLineNo">032</span> * This class supports parsing using a &lt;i&gt;named group regular expression&lt;/i&gt;, which is pattern string<a name="line.32"></a>
<span class="sourceLineNo">033</span> * using normal {@link Pattern} regular expression syntax with one additional grouping construct of the<a name="line.33"></a>
<span class="sourceLineNo">034</span> * form &lt;code&gt;({property}...)&lt;/code&gt;, allowing the Java bean property name to be specified inside the<a name="line.34"></a>
<span class="sourceLineNo">035</span> * curly braces at the start of a grouped subexpression.<a name="line.35"></a>
<span class="sourceLineNo">036</span> *<a name="line.36"></a>
<span class="sourceLineNo">037</span> * &lt;p&gt;<a name="line.37"></a>
<span class="sourceLineNo">038</span> * Instances of this class are immutable and thread-safe.<a name="line.38"></a>
<span class="sourceLineNo">039</span> */<a name="line.39"></a>
<span class="sourceLineNo">040</span>public class SimpleObjectParser&lt;T&gt; {<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>    private final Class&lt;T&gt; targetClass;<a name="line.42"></a>
<span class="sourceLineNo">043</span>    private final HashMap&lt;String, PropertyDescriptor&gt; propertyMap = new HashMap&lt;String, PropertyDescriptor&gt;();<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    /**<a name="line.45"></a>
<span class="sourceLineNo">046</span>     * Constructor.<a name="line.46"></a>
<span class="sourceLineNo">047</span>     *<a name="line.47"></a>
<span class="sourceLineNo">048</span>     * @param targetClass type of target object we will be parsing<a name="line.48"></a>
<span class="sourceLineNo">049</span>     */<a name="line.49"></a>
<span class="sourceLineNo">050</span>    public SimpleObjectParser(Class&lt;T&gt; targetClass) {<a name="line.50"></a>
<span class="sourceLineNo">051</span>        this.targetClass = targetClass;<a name="line.51"></a>
<span class="sourceLineNo">052</span>        this.buildPropertyMap();<a name="line.52"></a>
<span class="sourceLineNo">053</span>    }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * Get the target class.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     */<a name="line.57"></a>
<span class="sourceLineNo">058</span>    public Class&lt;T&gt; getTargetClass() {<a name="line.58"></a>
<span class="sourceLineNo">059</span>        return this.targetClass;<a name="line.59"></a>
<span class="sourceLineNo">060</span>    }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    /**<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * Same as {@link #parse(Object, String, String, boolean)} but this method creates the target instance using<a name="line.63"></a>
<span class="sourceLineNo">064</span>     * the target type's default constructor.<a name="line.64"></a>
<span class="sourceLineNo">065</span>     *<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * @throws RuntimeException if a new target instance cannot be created using the default constructor<a name="line.66"></a>
<span class="sourceLineNo">067</span>     * @since 1.0.85<a name="line.67"></a>
<span class="sourceLineNo">068</span>     */<a name="line.68"></a>
<span class="sourceLineNo">069</span>    public T parse(String text, String regex, boolean allowSubstringMatch) {<a name="line.69"></a>
<span class="sourceLineNo">070</span>        T target;<a name="line.70"></a>
<span class="sourceLineNo">071</span>        try {<a name="line.71"></a>
<span class="sourceLineNo">072</span>            target = this.targetClass.newInstance();<a name="line.72"></a>
<span class="sourceLineNo">073</span>        } catch (Exception e) {<a name="line.73"></a>
<span class="sourceLineNo">074</span>            throw new RuntimeException("can't create instance of " + this.targetClass + " using default constructor", e);<a name="line.74"></a>
<span class="sourceLineNo">075</span>        }<a name="line.75"></a>
<span class="sourceLineNo">076</span>        return this.parse(target, text, regex, allowSubstringMatch);<a name="line.76"></a>
<span class="sourceLineNo">077</span>    }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>    /**<a name="line.79"></a>
<span class="sourceLineNo">080</span>     * Parse the given text using the provided &lt;i&gt;named group regular expression&lt;/i&gt;.<a name="line.80"></a>
<span class="sourceLineNo">081</span>     *<a name="line.81"></a>
<span class="sourceLineNo">082</span>     * &lt;p&gt;<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * This method assumes the following about {@code regex}:<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * &lt;ul&gt;<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * &lt;li&gt;All instances of an opening parenthesis not preceded by a backslash are actual grouped sub-expressions&lt;/li&gt;<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * &lt;li&gt;In particular, all instances of substrings like &lt;code&gt;({foo}&lt;/code&gt; are actual named group sub-expressions&lt;/li&gt;<a name="line.86"></a>
<span class="sourceLineNo">087</span>     * &lt;/ul&gt;<a name="line.87"></a>
<span class="sourceLineNo">088</span>     *<a name="line.88"></a>
<span class="sourceLineNo">089</span>     * @param target              target instance<a name="line.89"></a>
<span class="sourceLineNo">090</span>     * @param text                string to parse<a name="line.90"></a>
<span class="sourceLineNo">091</span>     * @param regex               named group regular expression containing object property names<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * @param allowSubstringMatch if false, entire text must match, otherwise only a (the first) substring need match<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * @return parsed object or null if parse fails<a name="line.93"></a>
<span class="sourceLineNo">094</span>     * @throws PatternSyntaxException if the regular expression with the named group property names removed is invalid<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @throws PatternSyntaxException if this method cannot successfully parse the regular expression<a name="line.95"></a>
<span class="sourceLineNo">096</span>     * @throws IllegalArgumentException if a named group specfies a property that is not a parseable<a name="line.96"></a>
<span class="sourceLineNo">097</span>     *                                  property of this instance's target class<a name="line.97"></a>
<span class="sourceLineNo">098</span>     * @since 1.0.95<a name="line.98"></a>
<span class="sourceLineNo">099</span>     */<a name="line.99"></a>
<span class="sourceLineNo">100</span>    public T parse(T target, String text, String regex, boolean allowSubstringMatch) {<a name="line.100"></a>
<span class="sourceLineNo">101</span><a name="line.101"></a>
<span class="sourceLineNo">102</span>        // Scan regular expression for named sub-groups and parse them out<a name="line.102"></a>
<span class="sourceLineNo">103</span>        HashMap&lt;Integer, String&gt; patternMap = new HashMap&lt;Integer, String&gt;();<a name="line.103"></a>
<span class="sourceLineNo">104</span>        StringBuilder buf = new StringBuilder(regex.length());<a name="line.104"></a>
<span class="sourceLineNo">105</span>        Pattern namedGroup = Pattern.compile("\\(\\{(\\p{javaJavaIdentifierStart}\\p{javaJavaIdentifierPart}*)\\}");<a name="line.105"></a>
<span class="sourceLineNo">106</span>        Matcher matcher = namedGroup.matcher(regex);<a name="line.106"></a>
<span class="sourceLineNo">107</span>        int pos = 0;<a name="line.107"></a>
<span class="sourceLineNo">108</span>        int groupCount = 0;<a name="line.108"></a>
<span class="sourceLineNo">109</span>        while (true) {<a name="line.109"></a>
<span class="sourceLineNo">110</span>            int match = matcher.find(pos) ? matcher.start() : regex.length();<a name="line.110"></a>
<span class="sourceLineNo">111</span>            String chunk = regex.substring(pos, match);<a name="line.111"></a>
<span class="sourceLineNo">112</span>            for (int i = 0; i &lt; chunk.length(); i++) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>                if (chunk.charAt(i) == '('<a name="line.113"></a>
<span class="sourceLineNo">114</span>                  &amp;&amp; (i == 0 || chunk.charAt(i - 1) != '\\')<a name="line.114"></a>
<span class="sourceLineNo">115</span>                  &amp;&amp; (i == chunk.length() - 1 || chunk.charAt(i + 1) != '?'))<a name="line.115"></a>
<span class="sourceLineNo">116</span>                    groupCount++;<a name="line.116"></a>
<span class="sourceLineNo">117</span>            }<a name="line.117"></a>
<span class="sourceLineNo">118</span>            buf.append(chunk);<a name="line.118"></a>
<span class="sourceLineNo">119</span>            if (match == regex.length())<a name="line.119"></a>
<span class="sourceLineNo">120</span>                break;<a name="line.120"></a>
<span class="sourceLineNo">121</span>            buf.append('(');<a name="line.121"></a>
<span class="sourceLineNo">122</span>            patternMap.put(++groupCount, matcher.group(1));<a name="line.122"></a>
<span class="sourceLineNo">123</span>            pos = matcher.end();<a name="line.123"></a>
<span class="sourceLineNo">124</span>        }<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span>        // Sanity check our parse attempt<a name="line.126"></a>
<span class="sourceLineNo">127</span>        Pattern pattern = Pattern.compile(buf.toString());<a name="line.127"></a>
<span class="sourceLineNo">128</span>        int numGroups = pattern.matcher("").groupCount();<a name="line.128"></a>
<span class="sourceLineNo">129</span>        if (numGroups != groupCount) {<a name="line.129"></a>
<span class="sourceLineNo">130</span>            throw new PatternSyntaxException("the given regular expression is not supported (counted "<a name="line.130"></a>
<span class="sourceLineNo">131</span>              + groupCount + " != " + numGroups + " groups)", regex, 0);<a name="line.131"></a>
<span class="sourceLineNo">132</span>        }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>        // Proceed<a name="line.134"></a>
<span class="sourceLineNo">135</span>        return this.parse(target, text, pattern, patternMap, allowSubstringMatch);<a name="line.135"></a>
<span class="sourceLineNo">136</span>    }<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span>    /**<a name="line.138"></a>
<span class="sourceLineNo">139</span>     * Same as {@link #parse(Object, String, Pattern, Map, boolean)} but this method creates the target instance using<a name="line.139"></a>
<span class="sourceLineNo">140</span>     * the target type's default constructor.<a name="line.140"></a>
<span class="sourceLineNo">141</span>     *<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * @throws RuntimeException if a new target instance cannot be created using the default constructor<a name="line.142"></a>
<span class="sourceLineNo">143</span>     * @since 1.0.85<a name="line.143"></a>
<span class="sourceLineNo">144</span>     */<a name="line.144"></a>
<span class="sourceLineNo">145</span>    public T parse(String text, Pattern pattern, Map&lt;Integer, String&gt; patternMap, boolean allowSubstringMatch) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>        T target;<a name="line.146"></a>
<span class="sourceLineNo">147</span>        try {<a name="line.147"></a>
<span class="sourceLineNo">148</span>            target = this.targetClass.newInstance();<a name="line.148"></a>
<span class="sourceLineNo">149</span>        } catch (Exception e) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>            throw new RuntimeException("can't create instance of " + this.targetClass + " using default constructor", e);<a name="line.150"></a>
<span class="sourceLineNo">151</span>        }<a name="line.151"></a>
<span class="sourceLineNo">152</span>        return this.parse(target, text, pattern, patternMap, allowSubstringMatch);<a name="line.152"></a>
<span class="sourceLineNo">153</span>    }<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>    /**<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * Parse the given text using the provided pattern and mapping from pattern sub-group to Java bean property name.<a name="line.156"></a>
<span class="sourceLineNo">157</span>     *<a name="line.157"></a>
<span class="sourceLineNo">158</span>     * @param target              target instance<a name="line.158"></a>
<span class="sourceLineNo">159</span>     * @param text                string to parse<a name="line.159"></a>
<span class="sourceLineNo">160</span>     * @param pattern             pattern with substring matching groups that match object properties<a name="line.160"></a>
<span class="sourceLineNo">161</span>     * @param patternMap          mapping from pattern substring group index to object property name<a name="line.161"></a>
<span class="sourceLineNo">162</span>     * @param allowSubstringMatch if false, entire text must match, otherwise only a (the first) substring need match<a name="line.162"></a>
<span class="sourceLineNo">163</span>     * @return parsed object or null if parse fails<a name="line.163"></a>
<span class="sourceLineNo">164</span>     * @throws IllegalArgumentException if the map contains a property that is not a parseable<a name="line.164"></a>
<span class="sourceLineNo">165</span>     *                                  property of this instance's target class<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * @throws IllegalArgumentException if a subgroup index key in patternMap is out of bounds<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * @since 1.0.95<a name="line.167"></a>
<span class="sourceLineNo">168</span>     */<a name="line.168"></a>
<span class="sourceLineNo">169</span>    public T parse(T target, String text, Pattern pattern, Map&lt;Integer, String&gt; patternMap, boolean allowSubstringMatch) {<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span>        // Compose given map with target class' property map<a name="line.171"></a>
<span class="sourceLineNo">172</span>        HashMap&lt;Integer, PropertyDescriptor&gt; subgroupMap = new HashMap&lt;Integer, PropertyDescriptor&gt;();<a name="line.172"></a>
<span class="sourceLineNo">173</span>        for (Map.Entry&lt;Integer, String&gt; entry : patternMap.entrySet()) {<a name="line.173"></a>
<span class="sourceLineNo">174</span>            String propName = entry.getValue();<a name="line.174"></a>
<span class="sourceLineNo">175</span>            PropertyDescriptor property = this.propertyMap.get(propName);<a name="line.175"></a>
<span class="sourceLineNo">176</span>            if (property == null)<a name="line.176"></a>
<span class="sourceLineNo">177</span>                throw new IllegalArgumentException("parseable property \"" + propName + "\" not found in " + this.targetClass);<a name="line.177"></a>
<span class="sourceLineNo">178</span>            subgroupMap.put(entry.getKey(), property);<a name="line.178"></a>
<span class="sourceLineNo">179</span>        }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span>        // Attempt to match the string<a name="line.181"></a>
<span class="sourceLineNo">182</span>        Matcher matcher = pattern.matcher(text);<a name="line.182"></a>
<span class="sourceLineNo">183</span>        boolean matches = allowSubstringMatch ? matcher.find() : matcher.matches();<a name="line.183"></a>
<span class="sourceLineNo">184</span>        if (!matches)<a name="line.184"></a>
<span class="sourceLineNo">185</span>            return null;<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span>        // Set fields based on matching substrings<a name="line.187"></a>
<span class="sourceLineNo">188</span>        for (Map.Entry&lt;Integer, PropertyDescriptor&gt; entry : subgroupMap.entrySet()) {<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span>            // Get substring<a name="line.190"></a>
<span class="sourceLineNo">191</span>            String substring;<a name="line.191"></a>
<span class="sourceLineNo">192</span>            try {<a name="line.192"></a>
<span class="sourceLineNo">193</span>                substring = matcher.group(entry.getKey());<a name="line.193"></a>
<span class="sourceLineNo">194</span>            } catch (IndexOutOfBoundsException e) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>                throw new IllegalArgumentException(<a name="line.195"></a>
<span class="sourceLineNo">196</span>                  "regex subgroup " + entry.getKey() + " does not exist in pattern `" + pattern + "'");<a name="line.196"></a>
<span class="sourceLineNo">197</span>            }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span>            // If substring was not matched, don't set property<a name="line.199"></a>
<span class="sourceLineNo">200</span>            if (substring == null)<a name="line.200"></a>
<span class="sourceLineNo">201</span>                continue;<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span>            // Set property from substring<a name="line.203"></a>
<span class="sourceLineNo">204</span>            this.setProperty(target, entry.getValue(), substring);<a name="line.204"></a>
<span class="sourceLineNo">205</span>        }<a name="line.205"></a>
<span class="sourceLineNo">206</span><a name="line.206"></a>
<span class="sourceLineNo">207</span>        // Post-process<a name="line.207"></a>
<span class="sourceLineNo">208</span>        this.postProcess(target);<a name="line.208"></a>
<span class="sourceLineNo">209</span><a name="line.209"></a>
<span class="sourceLineNo">210</span>        // Done<a name="line.210"></a>
<span class="sourceLineNo">211</span>        return target;<a name="line.211"></a>
<span class="sourceLineNo">212</span>    }<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span>    /**<a name="line.214"></a>
<span class="sourceLineNo">215</span>     * Get the mapping from property name to setter method.<a name="line.215"></a>
<span class="sourceLineNo">216</span>     */<a name="line.216"></a>
<span class="sourceLineNo">217</span>    public Map&lt;String, PropertyDescriptor&gt; getPropertyMap() {<a name="line.217"></a>
<span class="sourceLineNo">218</span>        return Collections.unmodifiableMap(this.propertyMap);<a name="line.218"></a>
<span class="sourceLineNo">219</span>    }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>    /**<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * Set a property value.<a name="line.222"></a>
<span class="sourceLineNo">223</span>     * &lt;p/&gt;<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * &lt;p&gt;<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * The implementation in {@link SimpleObjectParser} simply invokes {@link #setSimpleProperty}.<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * Other property types can be handled by overriding this method.<a name="line.226"></a>
<span class="sourceLineNo">227</span>     * &lt;/p&gt;<a name="line.227"></a>
<span class="sourceLineNo">228</span>     *<a name="line.228"></a>
<span class="sourceLineNo">229</span>     * @param obj       newly created instance<a name="line.229"></a>
<span class="sourceLineNo">230</span>     * @param property  descriptor for the property being set<a name="line.230"></a>
<span class="sourceLineNo">231</span>     * @param substring matched substring<a name="line.231"></a>
<span class="sourceLineNo">232</span>     * @throws IllegalArgumentException if substring cannot be successfully parsed<a name="line.232"></a>
<span class="sourceLineNo">233</span>     * @throws IllegalArgumentException if an exception is thrown attempting to set the property<a name="line.233"></a>
<span class="sourceLineNo">234</span>     */<a name="line.234"></a>
<span class="sourceLineNo">235</span>    public void setProperty(T obj, PropertyDescriptor property, String substring) {<a name="line.235"></a>
<span class="sourceLineNo">236</span>        this.setSimpleProperty(obj, property, substring);<a name="line.236"></a>
<span class="sourceLineNo">237</span>    }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span>    /**<a name="line.239"></a>
<span class="sourceLineNo">240</span>     * Set a primitive or string property value.<a name="line.240"></a>
<span class="sourceLineNo">241</span>     * &lt;p/&gt;<a name="line.241"></a>
<span class="sourceLineNo">242</span>     * &lt;p&gt;<a name="line.242"></a>
<span class="sourceLineNo">243</span>     * The implementation in {@link SimpleObjectParser} handles primitives using the corresponding<a name="line.243"></a>
<span class="sourceLineNo">244</span>     * {@code valueOf} method; String values are handled by setting the value directly.<a name="line.244"></a>
<span class="sourceLineNo">245</span>     * &lt;/p&gt;<a name="line.245"></a>
<span class="sourceLineNo">246</span>     *<a name="line.246"></a>
<span class="sourceLineNo">247</span>     * @throws IllegalArgumentException if property is not a primitive or String property.<a name="line.247"></a>
<span class="sourceLineNo">248</span>     * @throws IllegalArgumentException if substring cannot be successfully parsed (if primitive)<a name="line.248"></a>
<span class="sourceLineNo">249</span>     * @throws IllegalArgumentException if an exception is thrown attempting to set the property<a name="line.249"></a>
<span class="sourceLineNo">250</span>     */<a name="line.250"></a>
<span class="sourceLineNo">251</span>    public void setSimpleProperty(T obj, PropertyDescriptor property, String substring) {<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span>        // Parse substring<a name="line.253"></a>
<span class="sourceLineNo">254</span>        Object value;<a name="line.254"></a>
<span class="sourceLineNo">255</span>        if (property.getPropertyType() == String.class)<a name="line.255"></a>
<span class="sourceLineNo">256</span>            value = substring;<a name="line.256"></a>
<span class="sourceLineNo">257</span>        else {<a name="line.257"></a>
<span class="sourceLineNo">258</span>            Primitive&lt;?&gt; prim = Primitive.get(property.getPropertyType());<a name="line.258"></a>
<span class="sourceLineNo">259</span>            if (prim == null) {<a name="line.259"></a>
<span class="sourceLineNo">260</span>                throw new IllegalArgumentException(<a name="line.260"></a>
<span class="sourceLineNo">261</span>                  "property `" + property.getName() + "' of " + this.targetClass + " is not a primitive or String");<a name="line.261"></a>
<span class="sourceLineNo">262</span>            }<a name="line.262"></a>
<span class="sourceLineNo">263</span>            value = prim.parseValue(substring);<a name="line.263"></a>
<span class="sourceLineNo">264</span>        }<a name="line.264"></a>
<span class="sourceLineNo">265</span><a name="line.265"></a>
<span class="sourceLineNo">266</span>        // Set value<a name="line.266"></a>
<span class="sourceLineNo">267</span>        try {<a name="line.267"></a>
<span class="sourceLineNo">268</span>            property.getWriteMethod().invoke(obj, value);<a name="line.268"></a>
<span class="sourceLineNo">269</span>        } catch (Exception e) {<a name="line.269"></a>
<span class="sourceLineNo">270</span>            throw new IllegalArgumentException("can't set property `" + property.getName() + "' of " + this.targetClass, e);<a name="line.270"></a>
<span class="sourceLineNo">271</span>        }<a name="line.271"></a>
<span class="sourceLineNo">272</span>    }<a name="line.272"></a>
<span class="sourceLineNo">273</span><a name="line.273"></a>
<span class="sourceLineNo">274</span>    /**<a name="line.274"></a>
<span class="sourceLineNo">275</span>     * Post-process newly created instances. The instance's properties will have already been<a name="line.275"></a>
<span class="sourceLineNo">276</span>     * set by a successful parse.<a name="line.276"></a>
<span class="sourceLineNo">277</span>     * &lt;p/&gt;<a name="line.277"></a>
<span class="sourceLineNo">278</span>     * &lt;p&gt;<a name="line.278"></a>
<span class="sourceLineNo">279</span>     * The implementation in {@link SimpleObjectParser} does nothing. Subclasses may override if needed.<a name="line.279"></a>
<span class="sourceLineNo">280</span>     * &lt;/p&gt;<a name="line.280"></a>
<span class="sourceLineNo">281</span>     */<a name="line.281"></a>
<span class="sourceLineNo">282</span>    protected void postProcess(T obj) {<a name="line.282"></a>
<span class="sourceLineNo">283</span>    }<a name="line.283"></a>
<span class="sourceLineNo">284</span><a name="line.284"></a>
<span class="sourceLineNo">285</span>    private void buildPropertyMap() {<a name="line.285"></a>
<span class="sourceLineNo">286</span><a name="line.286"></a>
<span class="sourceLineNo">287</span>        // Introspect target class<a name="line.287"></a>
<span class="sourceLineNo">288</span>        BeanInfo beanInfo;<a name="line.288"></a>
<span class="sourceLineNo">289</span>        try {<a name="line.289"></a>
<span class="sourceLineNo">290</span>            beanInfo = Introspector.getBeanInfo(this.targetClass);<a name="line.290"></a>
<span class="sourceLineNo">291</span>        } catch (IntrospectionException e) {<a name="line.291"></a>
<span class="sourceLineNo">292</span>            throw new RuntimeException(e);<a name="line.292"></a>
<span class="sourceLineNo">293</span>        }<a name="line.293"></a>
<span class="sourceLineNo">294</span><a name="line.294"></a>
<span class="sourceLineNo">295</span>        // Build map from property name -&gt; setter method<a name="line.295"></a>
<span class="sourceLineNo">296</span>        for (PropertyDescriptor property : beanInfo.getPropertyDescriptors()) {<a name="line.296"></a>
<span class="sourceLineNo">297</span>            if (property instanceof IndexedPropertyDescriptor)<a name="line.297"></a>
<span class="sourceLineNo">298</span>                continue;<a name="line.298"></a>
<span class="sourceLineNo">299</span>            Method setter = property.getWriteMethod();<a name="line.299"></a>
<span class="sourceLineNo">300</span>            if (setter == null)<a name="line.300"></a>
<span class="sourceLineNo">301</span>                continue;<a name="line.301"></a>
<span class="sourceLineNo">302</span>            this.propertyMap.put(property.getName(), property);<a name="line.302"></a>
<span class="sourceLineNo">303</span>        }<a name="line.303"></a>
<span class="sourceLineNo">304</span>    }<a name="line.304"></a>
<span class="sourceLineNo">305</span>}<a name="line.305"></a>
<span class="sourceLineNo">306</span><a name="line.306"></a>




























































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